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Tests of the lunar hypothesis (1984)

Taylor, S. R.

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Publication Date: 2019-01-25

Description: The concept that the Moon was fissioned from the Earth after core separation is the most readily testable hypothesis of lunar origin, since direct comparisons of lunar and terrestrial compositions can be made. Differences found in such comparisons introduce so many ad hoc adjustments to the fission hypothesis that it becomes untestable. Further constraints may be obtained from attempting to date the volatile-refractory element fractionation. The combination of chemical and isotopic problems suggests that the fission hypothesis is no longer viable, and separate terrestrial and lunar accretion from a population of fractionated precursor planetesimals provides a more reasonable explanation.

Keywords: LUNAR AND PLANETARY EXPLORATION

Type: Lunar Planetary Inst. Conf. on the Origin of the Moon; p 25

Format: text

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